Try it Live

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<!DOCTYPE HTML>
<html>
 <head>
   <style>
     #idexample{
      border:2px solid hotpink;}
   </style>
 </head>
 <body>
    
<h3 id="idexample">Example for the id attribute</h3>
<p>Most of the time id attribute is defined in CSS. For example background color, border color, width, height, and many more properties are given inside id attribute and the given id name will be mentioned in elements or div tag.
The id attribute is defined within style tag using #symbol, for example, #idnamehere{CSS properties here}</p>
​
 </body>
</html>
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